Vapor electric device.



E, WBINTRAUB.

VAPOR ELECTRIC DEVICE.

APPLICATION 1311.21) 1 11u.13, 1010 Patented June 10, 1913.

Inventor Ezechiei Weinfirauk EZECHIEL WEINTRAUB, OF LYNN, MASSACHUSETTS, ASSIGNOR TO GENES. $.14 ELItlCTlttllIfi COMPANY. A CORPORATION OF NEW YORK.

VAPOR ELECTRIC DEVICE.

Specification of Letters Patent.

Application filed December 13, 1910.

"alt-tiled?! unefttb. 'tttli ttit.

sin-m1 No. 597,012.

.lte it known that I, EZEfl-Ulfli lVi-xlx'riuun, a eitizen ot the United States. residing at Lynn, eounty of Essex, State of illassaehusetts, have invented certain new and uset'ul Improvements in Vapor ltllectrie Devices, of \vhieh the t'ollowing is a speeitieation.

The present invention relates to the eonstruotion of vapor are devices. such as mereury vapor lamps, reetitiers an'd'the like, and comprises a device in which the arcing electrodes as well as the are itself, are entirely inelosed in an exhausted S1 21(e. which is not, in eonnnunieation with the are spare.

Letters Patent No. 91.7.9.1), issued to me April t). 1905). describes a vapor eleetrie device romprising an external glass envelop surrounding an inner tube of material, such as :t'used silit-a, which is more re'traotouv than the outer envelop. In the deviee deseribed in this patent. the space in the inner tube, and the space between it and the glass tube are eonner-ted. While this eonstruetion is entirely operative and satistaetory. l tind that in some eases the inner tube ean advantageously he entirely inelosed, or in other words, outo't ronnnuuieation with the vaeuous space between the two tubes. This eonstruetion permits the vapor are to be run at a higher tenmerature and pressure. as. the 'aporized. eat'hode material does not pass into the spare surroumli'ng the two tubes.

ilso by this eonstruetion the outer tube is llHttttl only by radiation through the varuousspare. and thus is maintained at a lower temperature than when an open inner tube is employed. Another distipet advantage is gained through the heat iusula tion a tl'orded by the rat-nous spare surrounding the mereurv cathode. thus perinittiug the attainment of hi her temperatures and pressures within the mner tube. iln accord ame with in v invention. the inner tube is sealed permanently, or it is autmnati'ally elosed when the deviee. is started.

In the awommiuyiug drawings illustrating my invention. Figure 1 shows a mereury \apor lamp having an inner tube wriminently t-losed or sealed; Fig. 2 is a t'ragmental view showing the upper part. at the tube before the tube is evai'uated: l ig. 3 is a tragmeut al view showing an alternative t'ormotelosure. or soul. atthe anode end ol the lube; Fig. l. is a l'ragmental view showing another moditieation of closure for the anode entl ol the passing through the outer envelop 1..

tube. the. tube in this case beu'ig el'oseti aucomatieally by the pressure at the trier-- cury vapor within the same; and lfiif illustrates a form ot tube similar to shown in Fig. 4. an eleetrmnaguet being need to assist in elosing the tube.

Referring to .l ig. 1, the outer reeeptaele It eonsists of glass and' the inner envelop 93., supported therein, consists of some material more ret'raetory than glass such as fused or sintered quartz, or silira. The sintered quartz as prepared in the resistance lurnaee is preterablv heated in on are or oxygen tlame. thereby improving the trans iarericy ot' the material. This form ot quartz. tutu. is not only eons-iderably eheaper than the t'uaed quartz tube. but the. appearanoe oilf the light is better as the are is not: seen through the translueent. envelop. and. theretore the elleet ot' a solid iiu'andeseent; source is obtained. The lower end of the inner tube L is closed by a plug 3 eou-;-ii.-;ting either of glass, or t]l(l(tl steel. or other suitable material. This plug as elearly shown undies a long tapered joint with the quartz envelop and is tightly titted therein by grinding the surt'aees \Vlllt'll are in rontaet with eaeti othl-r. 'lhe leading-in wire l passes through the outer envelop 't and enters; the plug El and may if desired projeet into the body of mereury 5, whieh ronstitutes the eathode ot' the ("levire. The anode end ot the tube elosed by a tapered plug (3 eonsiatirn";- of niekel steel. or other metal. having an stantially the same eoellieient of expansion as quartz. At one end of this plug (3 is attaehed the anode 7 eonsisting otgraphita or other retraetory eoiuluetive mattint. and at the other is attaehed a leadiugan wire 8 illustrated in Fig. .3, the plug-t3 is held (rentered within the mouth ot the tube 2 and not; in eontaet with it. bel'ore the lamp is'eorn pleted. The initial elearanee between the plug (3 and the tube enables the inner tube to he evaeuated simultaneously with. the space between the tubes .1 and 3 when the lamp is attaehed to a suitable pump through the. small tube 9. lVlu-ir the evaeuation is eomplete the tube is sealed oll in the usual manner. and the glass surrounding the lead wire 9 is sol'tened. and the plugzj t3 drawn upward. thereby snugly fitting itin positi n. as illustrated in Fig. l.

in a moditied form of anode (le sure all tube,

in Fig. 4-, a form of device is shown in "which a. conical closure 11 consisting *ot nickel steel, or other suitable material, is held suspended Within the conical tip of the inner tube 2, by means of the lead Wire 12 which is in turn attached to :1 metallic tube 13 which slides over e cylinder 14 and makes electric contact therewith. The cylinder is ettechcd to the lead Wire 8 sealed into the outer glass tube 1. movement of the sliding contact device. In this form of device, the inner tube 2 is sealed off fron'i the space surrounding the same by the development of vapor pressure within the inner tube when the device is started, This pressure sets upon the lower surface of the cone 11 and lifts it upward,

thereby closing); themouth of the tube This operation may be assisted, as shown in I 5, by :1, solenoid 16 external. to the outer tube -ccns glass Within said cono sndconnected in series with the device, In thiscese the outer cylinder 13 made of magnetic material and When the lamp is sterted it is lifted upward by the magnetic action of the solenoid it The conical plug 11 is maintained inposition by the pull of the solenoid as Wellies the vapor pressure Within the inner-tube.

' All of these forms of lamps are started by simply tilting the same when appropriete circuit connections have been made, or

by a high voltege line or in. any other' suitable. Way. Devices for starting mercury vapor lamps, either automatically or by hand, are well known in the art and need notbe described in this connection. I do not claim herein broadly the combination of e" solid anode with. amercury vapor device of the high pressure type, this being; claimed in enotlier implication, Serial No, 758,946, filed'lllerch 13, 1913, as :1 con tinuetion hereof. i

etters Potent of the United States i s,-- iii a vapor electric device, the combineof evacuated container, on envelop Jing of moterialhnore ie nctorvthen ner, rigid A stop 15 limits the i lhat I claim as newt-ind desire to secvire sealing means for closing the inner con toiner to permit the accumulation of pressure therein during the operation of said vapor device, elccti odes in said inner envelop one of which consists of easily vaporizsble material, and current carrying conductors connected to said electrodes.

2, lln o vapor electric device, the combination or" an evacuated glass envelop, on evacueted envelop supported therein consisting of material more refractory than glass, elec trodes in said envelop at least one of which consists of easily vnporizable metal, leadingjn conductors therefor, and a solid plug opereble by pressure in said inner envelop to render the envelop vapor-tight during, the

operation of the device.

3. In a vapor electric device, the combination of an outer receptacle, an inner envelop supported therein, electrodes, at least one of which consists of vaporizable material, in said inner envelop, current connections, and means operated by vapor pressure Within said inner envelop for closing" the some.

4. in a vapor electric device, the combination of an outer receptacle, an inner envelop supported thereim'electrodes, at least one of which" consists of vsporizable material, in said inner-envelop, and a conical closure for one end of said inner envelop adopted to be lifted by vapor pressure in said inner envelop into engagement With the mouth of said envelop,= thereby sealing the some.

5. In a vapor electric device, the combinzu tion. of an outer exhausted receptacle, an inner exhausted silica envelop supported therein, electrodes Within said silica envelop one of which consists of mercury, current connections for said electrode, on automatic means operable upon the starting of said lamp for sealing the silica envelop from the 'ewicuated space surrounding the some.

6. In a vapor electric hunp, the combinetionof en. evacuated glass envelop, an ecu eted silica envelop supported therein, amen curv electrode and e cooperating solid elecing also as lending-inconductors.

lin Witness whereof-,1 have hereunto set inyhend this tenth day of Deceinbe 1910,

EZEGHIEL WEZNTRAUB,

firmness A. ARNARD. 

